A REALLY lame pun referring to the twenty third of December: the day before Christmas Eve.

Derived from the Biblical Adam and Eve in the Bible's book of Genesis.
My grandmother told me a story of a young girl who asked where Adam was in Christmas. The girl's parents were like what the heck?

She explained "Well, there's a Christmas Eve, so this is obviously Christmas Adam!"

* rimshot *
by TurtleShroom December 30, 2011
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The Eve of Christmas Eve, December 23. Two Eves make an Adam.
I can't stay out tonight, I need to see family for Christmas Adam.
by moofinator December 28, 2010
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The night before Christmas Eve, bcos God created Adam b4 Eve...
23rd Dec Christmas Adam
24th Dec Christmas Eve
25th Dec The Big Mans Day
by spunk bubble December 29, 2010
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The day preceding Christmas Adam (which is the day before Christmas Eve).
My favorite day of the year is Christmas Adam Eve, or December 22!
by speedy0901 December 23, 2011
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The day after Christmas. Generally a depressing day when you realize that all the festivities are over and you can't think of anything to look forward to except maybe your birthday or Earth Day. It is also the day when Santa's elves celebrate with milk for about 5 minutes and then begin excitedly making toys for next Christmas (approximately 364 days away). On this day all the little brats typically start making their lists for next Christmas.
Jimmy: What's wrong marshmallow?
Johnny: It's nothing. I just have the Christmas Adam blues.
Jimmy: Don't worry, Earth Day is coming up pretty soon.
Johnny: I guess you're right (sigh). Only 3 months, 26 days, 13 hours, 4 minutes, and 7 seconds!
by MarioLopezTheElf December 29, 2010
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